Figure 10 shows the dependence of the coordination numbers n_{NaO}, n_{ClD}, n_{NaCl} = n_{ClNa}, n_{Na} = n_{NaO} + n_{NaCl} and n_{Cl} = n_{ClD} + n_{ClNa} obtained from the simulations on (a) temperature at 0 kbar versus (b) pressure at 423 K.